Coaster brake



i 1,629,296 May 17 1927' L. G. oUELLE'r coAsTER BRAKE Filed `:une 24, i926 INVENTOR E EATT ORNE g Patented May 17, 1927.

LoUIs GRARD oUELLnT, or sT. enaonn'r, eUni-nic, CANADA.

COASTER BRAKE.

Application filed June 24,

rIhis invention relates generally to coaster brakes, used on bicycles and the like, the invention having more particular reference to a novel type of coaster brake.

The. invention has for an objectl the provision of an improved coaster brake embodying more eiiicient braking qualities.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawing, and to the appended claims in which the various novel features of the invention are more particularly set forth.

Fig. 1, of the drawing, is a side elevational view of my improved coast-er brake, in an engaged or driving position, part-ly in section so as to expose certain interior parts.

Fig. 2, is a similar view of my improved coaster brake in a disengaged or free position.

Fig. 3, is a vertical central sectional view thereof, in a braking position.

Fig. 4L, is a perspective detail view thereof.

Fig. 5, is a perspective detail view showing a modification of my improved device.

The hub 10, the drivenv member 11, the driving member 12 are those of a common, ordinary coaster brake such as generally used on bicycles and the like, as a means of permitting the rider of the said bicycle to coast, or to cease pedaling, and to apply the brake, so as to stop the said bicycle.

It being understood that the thread 13, formed or cut on the periphery of the driven member 11, engaging with a thread 14, formed or cut in the driving member 12, will permit the rear wheel of the said bicycle to be driven, or to run free by engaging or disengaging the tapered portion 15 ofthe driven member 11 with the tapered recess 16 of the driving member' 12, as clearly shown in Figs. 1, and 2 of the accompanying drawing. It being vunderstood that the above described construction is such as will permit the thread 13 to engage the tapered recess 17 ofthe driving member 12, with the tapered portion 18, of the hub 10,v so as to stop the said bicycle. It being further understood that the driving member 12 is provided with sprocket teeth 19, over which a sprocket chain, not shown in the accompanying drawing is extended so as to drive the said driving member 10, as is common to bi-. cycles and the like. It being also underlat its larger end.

1926. Serial No. 118,175.

stood that the driving member 11' is mounted on suitable ball bearings 20 or the like, and that a spring 21, is employed to centralize the free extremity 22 of the driven member 11, as is common to coaster brakes generally` used on bicycles orthe like.

Referring in particular to Fig. 1, of thev accompanying drawing, the tapered portion 23 of the driven member 11, is provided with a plurality of sides, so'as to form edges 24, so as to enable the above referred to tapered recess 16, of the driving member 12 to more firmly grip the tapered portion 23,

Vso as to prevent slippage when driving the said rear wheel of the said bicycle.

Referring in particular to Fig. 5', of the accompanying drawing, cation of the driven member as used in combination with my improved device, the tapered portion 23 of the above referred to driven member 11l is formed or cut circular, as at 25, at its smaller end, and is provided with a plurality of sides 26, at its larger end so as to enable the above referred to tapered recess 16, of the driving member 12, to gradually or smoothly engage or grip the tapered portion 23 for the purpose as hereinbefore stated.

It will be nnderstoodthat I do not necessarily limit `my invention to the particular design of coaster brake as above described, but to coaster brakes of all' classes and description employing a tapered recess and a tapered portion as a means of driving the rear wheel of a bicycle or the like.

Having thus described my invention,vvhat I claim as new, and desire to protect by lLetters Patent of t-he United States, is as 1. In a coaster brake of the class described, a'driven member comprising a tapered portion formed circular vat its smaller end and provided with a plurality of sides 2. In a coaster brake of vthe class described, a driven member comprising a tapered portion formed circular at its smaller end and provided with. a plurality of sides at its larger end,adapted to be engaged by a tapered recess of a driving member, Vso as to permit the said driving member to drive the said driven member. y In testimony whereof signature.

l Lorne GERARD oUnLLnT.

I have afiixed my showing a modifisok ics y 

